Dlekauff



(No Model.)

E. D. MIDDLEKAUFP & G. D. HARSIN.

GATE.

No. 440,177. Patented Nov. 11, 1890.

CVZI/H UNITED STATES PATENT FFIcE.

ELLSWORTH D. MIDDLEKAUFF'AND CHARLES D. HARSIN, OF STOCKTON, CALIFORNIA.

GATE.

SPECIFICATION forming part of Letters Patent No. 440,177, dated November11, 1890.

Application filed April 19, 1890. Serial No. 348,751. (No model.)

T0 at whom it may concern.-

Be it known that we, ELLSWORTH D. M11)- DLEKAUFF and CHARLES D. HARSIN,citizens of the United States, residing at Stockton, in the county ofSan Joaquin and State of California, have invented certain new anduseful Improvements in Gates; and we do declare the following to be afull, clear, and exact description of the invention, such as will enableothers skilled in the art to'which it appertains to make and use thesame, reference being had to the accompanying drawings, and to theletters of reference marked thereon, which form a part of thisspecification.

Our invention relates to an improvement in gates that may be opened andclosed by means of the contact of the wheels of the passing vehicle witha double-crank lever on the ground, which by proper connect-ions sets inmotion a gear-wheel meshing with a cograck gearing on the top of thegate.

In the drawings, Figure 1 is a side elevation of our improved gate. Fig.2 is an end view, partly in section and through line co m, Fig. 1. Fig.3 is a detached view of the crank-lever.

Ve construct and operate our improved gate as follows:

Thegate proper is composed of two fencepanels of boards D, suitablyconnected together.

B is an end post, which is provided with slots having rollers for thepassage of boards D.

B is an independent end post provided with a latch for receiving thegate when closed.

A is a center post provided with slots and rollers for the passage ofthe gate-boards.

O are posts in a line with the center post A and at suitable distancesfrom it. The end posts C have attached to their heads the bearings F ofa rolling shaft E, which at the center post A has upon it a largegear-wheel E, that meshes with a cog-rack gearing D upon the top boardof the gate. The roadway is between the posts A and B. At each of theposts C is provided a double-crank lever ground.

G, having parts 9 at right angles to each other. The lever is secured tothe ground near its post, and is connected at one end bya rod F to abellcrank lever F, which is pivoted on the bearing F and is providedwith cogs on its face which mesh with a pinion F on the end of the shaftE. The outside bearings of the crank-levers G are attached to bed-piecesG, composed of planks suitably secured to the The wheels of the passingvehicle come in contact with that party of the crank lever G which isupright, setting the shaft E in motion by means of the connectingmechanism above described, so that the gearwheel E, intermeshing withthe cog-rack gearing D, throws the gate open and permits the vehicle topass, and the Wheel again coming in contact with the upright part g ofthe lever G at the opposite post 0 causes a reverse action and closesthe gate.

Having thus described our invention, What We claim is- The combination,With the catch-post, of the post B, having rollers, the post A, thegearwheel E, journaled in said post A, the sliding gate, the racksecured to the upper side of the rail of the gate, the posts O O, thecranklevers G, journaled in the ground at the lower ends of said posts0, the bell-crank levers journaled at the upper ends of said posts andhaving the segmental racks thereon, the horizontal rod E, secured to thegear E, the pinions F, secured to the opposite ends of said rod, and therods connecting the arms of the bell-crank levers with one end of thedoublecranked levers, all adapted to operate substantially as and forthe purpose set forth.

In testimony whereof we affix our signatures in presence of twoWitnesses.

ELLSWORTH D. MIDDLEKAUFF. CHARLES D. HARSIN.

Witnesses:

JOSHUA B. WEBSTER, D. H. BERDINE.

